IAI3001D-01
Page 6 of 8
07/18
B. Apply power to terminals marked 1 & 4 (CLOSE)
•
The actuator will drive to the full CLOSE (CW) position (as viewed from ABOVE the
actuator).
•
If this is NOT the correct stop position, refer to the “Limit Switch Setting” section in this
manual to reset LS2.
Limit Switch Setting
The travel cams are set to control the open and closed position of the valve. The position is set to stop the travel
of the actuator when the travel cams activate the limit switch. Standard is two limit switches (LS1 & LS2), one
for open, one for closed. LS1 & LS2 limit the maximum range by disabling the electric motor. LS3 & LS4 are
optional. See photo 8. They allow external equipment to confirm that the valve has reached the fully open and
fully closed positions.
Care must be taken to ensure that LS3 & LS4 are set to trip prior to LS1 & LS2 so that
proper end of travel indication is provided.
The travel cams can be adjusted with 2.5mm Allen key.
•
To set LS1, the OPEN position (Full CCW Position):
o
Turn power off and use manual override
to turn valve to the open position.
o
Remove cover and loosen the set screw on
the bottom cam, TC1.
o
Rotate cam clockwise to reset the switch
contact.
o
Then, slowly rotate cam counter-
clockwise until a light click is heard.
o
Securely tighten the cam and apply power
to check the end position.
•
To set LS2, the CLOSE position (Full CW Position):
o
Turn power off and use manual override
to turn valve to the closed position.
o
Loosen the set screw on cam TC2.
o
Rotate cam counter-clockwise to reset the
switch contact.
o
Then, slowly rotate cam clockwise until a
light click is heard.
o
Securely tighten the cam and apply power
to check the end position.
Photo 8
